Centrifugal dispenser



Oct. 18, 1960 M. NISON EI'AL 2,956,709

CENTRIFUGAL DISPENSER Filed March 24, 1958 Fig. 1

INVENTORS. pam 10 A. luau l6 Maze/5 N/SO/V BY 9 f T Tun? nrTmiA E 5/ 3 Sheets-Sheet 1 Oct. 18, 1960 Filed March 24, 1958 M. NISON EI'AL CENTRIFUGAL DISPENSER 3 Sheets-Sheet 2 Trial/Q lq-r-r mvg United States Patent Office 2,956,709 Patented Oct. 18, 1 960 'CENTRIFUGAL DISPENSER Morris Nison, 4518 Chesapeake Ave., and Donald A. Ludwig, 118 Almond Ave., both of Dayton, Ohio Filed Mar. 24, 1958, Ser. No. 723,223

19 Claims. (Cl. 222-52) This invention relates to dispensers and more particularly to improvements in centrifugal dispensers.

With the advent of new softeners and bleaches for use in washing clothes, aneed has become apparent for an effective device to automatically dispense such materials at the proper interval in the cycle of the automatic washer. Many prooblems have arisen in efforts to provide such a device. The major problem has been to relate efficiency and economy in a single dispenser unit. The present invention provides the solution.

A primary object of the invention is to provide improvements in apparatus capable of serving as automatic dispenser means in an automatic Washer whereby such apparatus may be economically manufactured, more efficient and satisfactory in use, adaptable to a wide variety of applications and require a minimum of maintenance.

While the invention will be described with specific reference to its embodiment in a dispenser unit for use in automatic washers, the application of the invention concept is not so limited, nor is such intended.

A practical embodiment of the invention provides a dispenser unit which is buoyant, yet weighted in nature to effect a controlled positioning thereof under the influence of centrifugal force effects. The dispenser so provided is reduced to the simplest of structure and is effective to positively operate at the required interval in the operating cycle of an automatic washer in a completely automatic fashion. In its preferred form it is particularly advantageous for use in a washer employing nested baskets wherein the inner wash basket is perforated, as in a Whirlpool washer.

An object of the invention is to provide an economical and eflicient centrifugal dispenser incorporating an improved valving means.

A further object of the invention is to simplify the structure and function of centrifugally operated dispenser units.

An additional object of the invention is to provide an improved free body type dispenser which is cubical in form.

Another object of the invention is to provide a buoyant dispenser which is automatically responsive to centrifugal force effects and is weight controlled to insure a proper dispensing action thereby.

A further object of the invention is to provide dispensing apparatus possessing the advantageous structural features, the inherent meritorious characteristics, and the mode of operation herein described.

With these and other objects in view which will become more apparent from the following specification and claims, the invention intended to be protected by Letters Patent consists of the features of construction, the parts and combinations thereof, and their means and mode of operation as herein described or illustrated in the accompanying drawings, or their equivalents.

Referring to the accompanying drawings, wherein illustrative but not necessarily the only forms of embodiment of the invention are shown,

Fig. 1 is a vertical cross sectional view of a free body dispenser in accordance with the invention;

Fig. 2 is a cross sectional view of a further embodiment of the invention which is generally cubical in form; Fig. 3 is a fragmentary View similar to that of Fig. 2 but showing the dispenser under the influence of centn'fugal force effects; and r Fig. 4 is a fragmentary sectional view illustrating a. modification of the device of Figs. 2 and 3.

the drawings.

erably of plastic. The shell 2 which will be referred to as the base shell is centrally provided with a circular.

group of apertures 4 concentrically and uniformly spaced about a central aperture 5. The wall of the shell 2 is increased in thickness about the apertures '4 to providei an annular shoulder 6 spaced inwardly of the shell in a plane at right angles to the central axis of the aperture 5. The shoulder 6 is recessed relative to a peripheral rim 7 formed in the inner surface of the shell. inner periphery of the shoulder '6 is concentric to and spaced outwardly relative the circular groupof apertures 4. .The inner surface of shell 2 slopes from the inner periphery of the shoulder 6 to the outer periphery of the circular group of apertures 4, thus providing a conically converging surface leading to the apertures 4.

A rod 9 of brass or the like is fixed to mount centrally and coaxially of the shell 2. The rod 9 has one end reduced to nest in the aperture 5, the shoulder provided by the reduction thereof seating to the inner surface of shell 2 about aperture 5 and within the group of aper-- tures 4. The upper end of rod 9 as viewed in Fig. 1 of the drawings projects in the mating hemispherical shell 3, coaxial therewith. Rod 9 is axially bored from its upper end for a substantial portion of its length and sealed at its upper end 10 to form a chamber 11 therein; Apertures 12 are provided in the wall of rod 9 respec; tively communicating with chamber 11 at either end.

An annular stepped shoulder 13 is provided in the inner surface of shell 2 uniformly spaced from the aperture 5 and facing in the direction of the mating shell 3. An annular plate 14, preferably of plastic, seats at its outer periphery to the stepped shoulder 13 and is welded} of the sphere 1 formed thereby. A plate 17 of a circular nature has its outer edge contained in the groove 16 tobe fixed as a separating plate between the shells as they are welded together. Plate 17 is provided with a central aperture 19 coaxial with the aperture 5 in the shell 2 to receive the upper end of rod 9 therethrough. A group of apertures 20 are provided in plate 17 concentric with and uniformly spaced about the aperture 19.

The shell 3 has a central aperture 21 coaxial with the aperture 5 in shell 2 which is defined by an integral tubular. projection 22 from its inner surface. The inner extremity of the tube 22 extends to abut the plate 17. about the apertures 20. An annular projection 23 fromthe plate 17 contains the end of the tube 22 in its fixed relation to plate '17. The tube 22 thus concentrically nests the upper end of rod 9.

:A cylindrical valve element 24 having conically lre- The.

duced extremities 25 and 26 slidably mounts about the rod 9 within the shell 2. The body of valve 24 is externally expanded intermediate its ends to provide shoulder 27 facing in the direction of shell 3. A cap shaped annular plate 29 is fixed about the body of valve 24 to abut the shoulder 27. The plate 29 bridges the central aperture in plate 14 to have its upper face abut the plate 14. A coil spring 30 about valve 24 respectively abuts the cap plate 29 and the shoulder 6 in the inner surface of shell 2 to bias the plate 29 to the plate 14. Since the plate 29 is connected to the valve 24, the valve is thereby biased in the direction of shell 3, its conically reduced end 25 abutting the plate 17 between aperture 19 and apertures 20 and being limited thereby. The end of valve 24 adjacent the shoulder 6 is counterbored at 31 to provide a cylindrical space about rod 9 in communication with the lower aperture 12 therein as the valve is biased to plate 17. The upper aperture 12 in rod 9 opens into the tube 22 as seen in Fig. 1 of the drawings.

As constructed, the base shell is normally divided into two chambers 32 and 33 separated by plate 14 as capped by the plate 29 on the valve 24. The upper chamber 32 is provided with access thereto through tube 22, apertures 20 and about the conically reduced end of valve 24. Exit is normally provided from the lower chamber 33 through the apertures 4.

To illustrate a use of the above described embodiment of the invention let us consider its application in a Whirlpool type washer. The sphere 1 is held in its upright position shown and a charge of liquid softener or other material is introduced through the tube 22, apertures 20, down about the conical end of valve 24 into chamber 32. The valve body 24 is preferably of brass and since it is within the shell 2, the shell is weighted to maintain the sphere upright as shown as it is introduced in the washer. The rod 9 adds to the vertical stability of the sphere so the charge will not inadvertently flow back out of the tube 22. After the capsule 1 is introduced with the clothes in the washer, the automatic washing cycle is initiated. It must be commented that the Whirlpool type washer employs inner and outer wash baskets, the inner being perforated. As the wash water enters the inner basket, the sphere or capsule will float and move up with the water. The provision of apertures 12 in rod 9 to communicate air with the chamber 33 in the base shell 2 assists in adding buoyancy to the capsule. During the agitation of the dirty clothes the capsule will bob on the water but maintain its relative stability and the charge in chamber 32 due to its weight distribution.

Next, the dirty water is pumped out and the clothes settle to the bottom with the dispenser on top. When the spin cycle begins centrifugal force effects will cause the capsule to travel up the wall of the basket. Disposition of the weight in the capsule causes the central portion of shell 2 including the apertures 4 to abut and cling to the wall of the perforated basket. Spring 30 is so designed that at acertain spin rate the valve 24 will overcome the bias of the spring 30 and fly out to have its conically reduced end 26 seat in sealing relation to the conical surface 8 of the shell 2 and seal the apertures 4 thereby. This causes the cap 29 to displace from the plate 14 and the charge in chamber 32 will be channeled by the sloped surface of plate 14 through the space between the inner periphery of plate 14 and the valve 24 into chamber '33 under the influence of centrifugal force.

The capsule 1 will continue to cling to the wall of the basket during the spin cycle. As the spin rate reaches a maximum and starts to decrease, rinse water is introduced to the inner wash basket. At a predetermined decrease in spin rate the spring 30 will overcome centrifugal force efiects and move the valve and plate 29 back to their normal positions, capping the plate 14 in the process. Centrifugal force will cause the charge in the chamber 33 to eject through the apertures 4 into the outer wash basket and mix with the rising rinse water. The dispensing action is simple and complete and at the required interval in a completely automatic fashion. In the very simplicity of the structure and function of the invention embodiment a high efiiciency and a safe operation result.

A further embodiment is shown in Figs. 2 and 3 of the drawings. The free body dispenser 41 illustrated includes concentrically arranged generally cubical shells 42 and 43. The outermost shell 42 is formed of six identical outwardly bowed or dished plate elements 44 which are preferably of plastic. Each plate 44 has a central aperture 45. A tube element 46 is fixed to project centrally from the inner face of each plate 44 coaxial with the aperture therein. The inner wall of tube 46 extends inwardly relative the aperture to provide an outwardly directed shoulder 47 at the edge. A ring insert 48 welded to plate 44 to line the aperture 45 seats to the shoulder 47 so its inner surface forms a continua tion of the inner surface of the tube which it abuts. The inner surface of the insert 48 conically converges from the inner periphery of the tube 46 and the inner surface of the tube conically converges similarly but oppositely at its projecting extremity. The projecting extremity of the tube 46 is externally reduced to provide a shoulder 49 facing away from the connected plate 44. A generally rectangular plate 50 constituting one side of the inner shell 43 is centrally apertured to mount about the externally reduced end of tube 46 to abut shoulder 49 and be welded thereto. Thus six pairs of parallel connected plates 44 and 50 are provided for effecting the concentric shell structure employed in this embodiment of the invention.

The capsule 41 is formed by placing the pairs of plates 44 and 50 in edge abutting relation and welding them together to form concentric cubes in a manner believed obvious.

A cylindrical filler tube 51 is fixed to project from the outer surface of one plate 50 to define an aperture therein and to engage to the parallel plate 44 to define an aligned filler aperture therein. A removable cap serves to plug the filler aperture and thereby cover the filler tube. This constitutes the means for introducing a charge of liquid softener or the like to the inner shell 43 of the dispenser 41.

Each tube 46 contains a generally cylindrical valve element 52, of brass or the like, provided with conically reduced extremities. The conically reduced extremities of the valves are adapted to selectively mate with the conically formed surfaces provided to tube 46 to one end and the insert 48 at the other end so a seal of either end of the tube may be effected thereby, depending on the disposition of the valve therein.

A screw 53 is threadedly engaged coaxially within each valve 52 to have a hook 54 project from its innermost extremity to shell 43. A slot 55 is provided in the other end of each screw accessible through the aperture in associated plate 44 defined by tube 46. An elongated coil spring 56 is connected at one end to each hook 54. The other ends of springs 56 are mutually connected centrally of shell 43 to bias the valves 52 to seal the inner extremities of tubes 46 and shell 43 thereby.

As shown, each of the tube elements 46 has a series of three circumferentially spaced apertures 57 adjacent the inner surface of the outer shell 42 which are mutually angled toward the inner shell 43. Due to the bias on the valves 52, the apertures 57 are normally open, lying outward of the contained valve associated therewith. A further circumferentially arranged series of apertures 58 is provided in each tube 46 to its inner end, angled similarly to apertures 57 but directed to provide communication between the portion of the tube in which the valve 52 normally lies and the space between the cubical shells 42 and 43. Thus, apertures 58 are normally sealed by valves 52 and apertures 57 are normally open.

In use this embodiment is essentially the same as that previously described. The filler cap on the capsule 41 is removed to introduce softener or the like into the inner shell 43 through the tube 51 and then replaced. The valves 52 are mutually biased to seal the inner ends of the tubes 46 so the charge is sealed in the cube 43. The capsule 41 may then be placed in the basket of the automatic washer with the dirty clothes. The space provided between the shells 42 and 43 insures buoyancy of the unit and the charge fills only half the shell 43 providing air space to increase the buoyancy of the capsule. As clothes are agitated in the washing cycle, the capsule will therefore bob on the water.

As in the first case, the wash water is pumped out and the clothes settle to the bottom of the basket with the capsule on top. When the spin cycle begins, centrifugal force effects developed will cause the capsule to travel up the wall of the basket. The cubical form of the capsule insures that one of its sides will naturally cling to the side of the spinning basket, its central aperture being disposed adjacent thereto. At a predetermined rate of spin, the centrifugal force effects will be such that the weight of the valve 52 in the tube 46 adjacent the basket wall will overcome the bias of the connected spring 56 and fly outwardly to seal the outer end of the tube. The apertures 57 in this tube are thereby closed and the apertures 58 opened to provide communication between the interior of the shell 43 and the space between the shells 42 and 43. The bias on the one spring 56 will tend to increase the tension on the other valves 52 and maintain their sealing relation to the associated apertures in shell 43. As the basket spins, the charge is centrifugally evacuated from the inner shell to the space between the shells through apertures 58. When the spin rate starts to decrease, rinse water is introduced to the wash basket. At a predetermined decrease in spin rate the tension of spring 56 will overcome the centrifugal force on outwardly displaced valve 52 to pull it back to complete the seal of shell 43 once more. The charge will then be centrifugally evacuated from the capsule through apertures 58 to mix with the rinse water.

Again, the dispensing action is simple, safe and complete. The structure of this form of the invention is easy to fabricate and its function leaves little chance of operating difiiculties. The slotted heads 55 in the screws employed in the valves 52 enable an adjustment of the screws relative the valves to selectively vary the tension of the springs 56 on the valves to suit the application of the capsule.

Fig. 4 of the drawings shows a modification of the device of Figs. 2 and 3. In this instance, one of the outer plates 44 is modified to have a central aperture 45' defined by a comically converging tube 46 projecting from its inner surface. The innermost end of this tube 46 is externally reduced to enable it to nest within the aligned aperture in the opposite plate 50 of the inner cube 43, the external shoulder provided by the reduction of tube 46' seating to the plate 50' and being welded thereto. The tube 46 in this instance has not been provided with apertures and serves as a filler tube for introduction of the charge to the cube 43'. A hollow cap 61 threadedly engages in the tube 46' to normally seal aperture 45'.

In addition, partitions 62 are fixed to plate 44 to project rectangularly from its inner surface and be welded about the periphery of the plate 50 to form a sealed air chamber 60 about the filler tube and to one side of the capsule 41'. The above provides the only modifications of the device 41 of Figs. 2 and 3 and the capsule 41' is otherwise identical.

The modification of Fig. 4 provides the addition of the sealed air chamber 60 to one side of the cube to thereby establish the position of the cube in the water.

The cube will always position itself with chamber 60 uppermost and will thus be provided with maximum stability.

It is believed the structure and function of the invention as embodied in a free body dispenser is clear, as well as the advantages attendant thereto.

From the above description it will be apparent that there is provided a device of the character described possessing the particular features of advantage beforeenumerated as desirable, but which obviously is capable of modification in its form, proportion, detailed construction and arrangement of parts without departing from the; principle involved or sacrificing any of its advantages. A

While in order to comply with the statute, the invention has been described in language more or less specific as to structural features, it is to be understood that the invention is not limited to the specific features shown but that the means and construction herein disclosed comprises the preferred form of several modes of putting the invention into effect and the invention is therefore claimed in any of its forms or modifications within the legitimate and valid scope of the appended claims.

Having thus described our invention, we claim:

1. A dispenser comprising, a free body buoyant shell having an outlet therein, partition means in said shell having an apertured portion, means normally sealing said apertured portion, said sealing means being Weighted in nature and responsive to centrifugal force effects to clear said'apertured portion, a charge chamber to one side of said partition means and a discharge chamber to the other, said sealing means being responsive to centrifugal force effects to selectively seal said outlet to provide for displacement of the charge to the discharge chamber and to return to normal sealing relation to said partition means providing for discharge of the charge through the outlet in said shell in response to centrifugal force.

2. A free body dispenser'including, a spherical shell having a first partition defining two hemispherical chambers therein, a tube opening outwardly of one of said chambers and in communication with the other through said partition, a second partition in said other chamber parallel to said first partition and having an aperture therein, valve means in said other chamber normally seal: ing said aperture and means defining an outlet in said shell centrally of said other chamber, said tube receiv-, ing a charge of softener or the like to direct it intermediate said partitions and said valve means being automatically operable to allow the charge to pass through the aperture in said second partition and further operative to reseal said aperture and provide for the discharge of the charge through said outlet. 2

3. A free body dispenser, including, a pair of spaced concentric cubical shells having aligned apertures, tube means connecting said shells and defining said aligned apertures, means for introducing a charge to the inner shell, means in said tube means normally sealing said inner shell, said tube means'having apertures at the respective ends thereof, said sealing means being adaptable to selectively seal the apertures in the respective ends of said tube means under the influence of centrifugal force whereby a charge may be introduced intermediate said shells from said inner shell to be discharged under the influence of centrifugal force effects through said tube means. 7

4-. A free body buoyant dispenser including, pairs of generally rectangular plate elements, aligned apertures, in said plate elements, tube means connecting said plate ele ments about said aligned apertures, said pairs of plate elements being connected in edge abutting relation and welded together to form a pair of concentric cubical shells, valve means in said tube means for selectively seal ing the inner or the outer shell, means for introducing a charge of softener or the like to said inner shell and means provided in said tube means in operative relation to said valve means therein providing for movingva charge automatically from said inner shell outwardly of said dispenser through said tube means in response to centrifugal force effects on said dispenser.

5. A free body dispenser including, a pair of concentric cubical shells, means defining aligned apertures in said shells maintaining them in spaced relation, said aperture defining means having spaced apertures respectively communicating the inner shell with the space between said shells and the space between said shells with the outer shell and means responsive to centrifugal force effects for moving a charge from said inner shell to the space between said shells and from the space between said shells outwardly of said outer shell.

6. A free body dispenser including, an inner shell, an outer shell, said shells being cubical in form, aligned apertures in said shells, tube elements connecting said shells at the apertured portions thereof, said tube elements having apertures at the respective ends thereof, a valve in each tube element, said valves having springs connected mutually connected at the center of said inner shell and biased thereby to normally seal the apertures in said inner shell and the apertures to the inner ends of said tubes, said valves being selectively responsive to centrifugal force effects to seal an associated aperture in the outer shell and the apertures to the outer end of the associated tube whereby a charge may be moved from said inner shell to pass intermediate said shells through the apertures in the inner end of the said associated tube and then seal the apertures to the inner end of said associated tube for movement of the charge outwardly of the dispenser through the apertures in the outer end of said associated tube.

7. The structure set forth in claim 6, characterized by screws in said valves providing the means for connecting the springs thereto, said screws being accessible through the apertures in said outer shell for adjustment relative said valve elements to vary the tension of said springs on said valves.

8. A free body dispenser including, a spherical shell having a diametral partition, means providing a balance weight to one side of said partition establishing the position of the shell when placed in a body of fluid, openings in said shell, means for introducing a charge to said shell through one of said openings to the side of the partition having said weight therein, means including said weight means for normally containing the charge in said shell, said weight means being responsive to centrifugal force effects for automatically effecting a dispensing of the charge through at least one of said openings.

9. A free body dispenser including, a hollow shell, a

compartment in one half of said shell providing an air cavity, means providing a receptacle for a charge of fabric softener or the like in the other half of the shell, means of a weighted nature in said other half of the shell operative to maintain the charge in said receptacle when said shell is placed in a body of fluid, outlet means in said other half of the shell, said means of a weighted nature normally separating the charge from said outlet means and responsive to centrifugal force effects to seal said outlet means for movement of the charge from said receptacle to adjacent said outlet means and further responsive to a decrease in centrifugal force effects to open said outlet means for discharge of the charge therethrough.

10. A free body dispenser including, a hollow shell having means providing an air compartment in the upper half thereof, means in the lower half of said shell immediately adjacent the upper half providing a receptacle for a charge of fabric softener or the like, said receptacle having a discharge opening to the bottom of the shell, valve means in said lower half of the shell biased to seal said discharge opening, outlet means centrally in said lower half of said shell, said valve means normally separating the charge in said receptacle from said outlet means and automatically condition responsive to seal said outlet means to permit movement of a charge from said receptacle to adjacent said outlet means in said shell and further responsive to a predetemrined change in conditions to which the shell is subjected to once more seal said discharge opening whereby the charge may be discharged through said outlet means.

11. A free body dispenser including, a hollow shell having means defining an air compartment therein, receptable means to the center of said shell for receiving a charge to be dispensed therefrom, a dispensing chamber in said shell adjacent said receptacle means, valve means normally separating said receptacle means and said dispensing chamber, means providing outlet means from said dispensing chamber aligned with said valve means, said valve means being responsive to centrifugal force effects for selectively positioning automatically to seal said outlet means and provide communication between said receptacle and said dispensing chamber for passage of the charge to said chamber and out through said outlet means on return of said valve means to normal position.

12. A free body dispenser including, a hollow shell having a diametral partition, axially aligned openings in said shell and partition, means connected defining openings in said shell and said partition for introducing a charge in said shell to one side of said partition and forming a sealed cavity to the other side thereof, an annular plate fixed to said shell substantially parallel to said partition to the side away from said cavity, coaxial with said openings, a guide fixed in said shell coaxial with said openings, a valve slidable on said guide brased to normally seal said annular plate and disposed opposite one of said openings in said shell whereby on subjecting the shell to centrifugal force the valve will move to seal said one of said openings and the charge will pass said annular plate to adjacent said one opening for discharge therethrough upon return of said valve to its normal position.

13. The structure as set forth in claim 12 wherein said guide extends into said means for introducing a charge in said shell and is provided with an internal cavity, apertures in said guide communicating with the cavity, at its respective ends, one of which opens into said charge introducing means, said valve being counterbored at its end adjacent said one opening and another of said apertures in said guide normally opening to said counterbore.

14. A buoyant free body dispenser having a charge chamber, a dispensing chamber and means defining an air pocket therein, at least one opening between said chambers, means defining openings from said dispensing chamber, guide means having valve means slidable thereon to selectively seal said openings whereby a charge may be automatically passed from said charge chamber to said dispensing chamber and out from said dispensing chamber under the influence of centrifugal force.

15. A dispenser for introduction in a fiowable medium for relatively free movement therewith in response to forces applied thereto including a unitary shell constituting a free body having partition means defining hollow chambers therein rendering it buoyant, one of said chambers providing for storage of a self contained charge of fiowable material in said shell, another of said chambers being adapted to receive the charge from said storage chamber and valving means including in the partition means between said storage and receiving chambers for selectively providing communication therebetween in response to a predetermined physical change in the condition of the flowable medium for automatic transfer of the fiowable material to said receiving chamber, said shell having at least one outlet defined therein in communication with said receiving chamber for automatic discharge of the fiowable material therethrough on a predetermined further change in the condition of the fiowable medium.

16. A dispenser for introduction in a flowable medium including a unitary housing constituting a free body having chambers therein rendering it buoyant, said chambers including a storage chamber accommodating a self contained charge of material in said housing to be automatically dispensed in the flowable medium and a dispensing chamber, means normally separating said storage and dispensing chambers automatically displaceable under the influence of a predetermined centrifugal force for providing communication therebetween and a transfer of the charge to said dispensing chamber and means defining an outlet in said housing to provide for an automatic discharge of the charge from said dispensing chamber related to the condition of the flowable medium.

,17. A dispenser for dissipating a charge of mod fying material in a flowable medium including a shell type housing constituting a free body for introduction in the flowable medium having chambers formed therein rendering it buoyant, means forming one of said chambers within said housing to accommodate storage of a charge of modifying material and defining a dispensing chamber adjacent thereto with said shell type housing, valve means normally separating said storage and dispensing chambers, and at least one opening in said housing aligned with said valve means, said valve means being selectively and automatically responsive to centrifugal force effects or lack thereof to respectively provide communi cation between said storage and dispensing chambers for transfer of the charge to the dispensing chamber and simultaneous closing of the opening in said housing and to open the opening of said housing for automatic dis charge of the charge to the flowable medium about said shell type housing.

18. A dispenser including a unitary shell type housing having hollow chambers therein rendering it buoyant adapted for introduction into a fluid medium, one of said chambers being adapted to provide a self contained charge of material within said housing adapted to modify the physical characteristics of the fluid medium, means defining at least one passage within said housing for movement of the charge from said one chamber and out of said housing and means in said passage within said housing selectively and automatically operable in timed sequence to first provide for passage of the charge from said storage chamber and then provide for its passage out of said shell type housing.

19. A capsule dispenser including, an outer shell of a floatable nature, a second shell concentrically located therein, means fixing said second shell in spaced relation to the inner wall of said outer shell, aligned apertures in said shells, valving elements externally of the apertures in the inner shell, spring means connecting to the inner extremities of said valve elements and commonly joined in the geometric center of said inner shell to normally bias said valve elements to seal the apertures therein and position said valve elements in spaced relation to the inner wall of said outer shell thereby, means defining an inlet aperture to said inner shell through said outer shell for introduction of a charge to said inner shell, said valve elements being responsive to centrifugal force eifects on rotation of said dispenser about an external axis to radially extend against the bias of said spring elements to seal the apertures in the outer shell and open the apertures in the inner shell for passage of the charge in said inner shell to the space between said shells, the valve elements being further responsive to a removal of said centrifugal force effects to once more seal the apertures in said inner shell and open the outer shell apertures for automatically dispensing the charge from the space between said shells.

Wolf June 5, 1923 Matter Mar. 4, 1941 

